Which of the following statement is incorrect?
1. | Reaction centre is formed by a group of chl- a molecules. |
2. | Reaction centre is different in both the photosystems. |
3. | In PS I the reaction centre chlorophyll a has an absorption peak at 700 nm. |
4. | In PS II the reaction centre chlorophyll a has absorption maxima at 680 nm. |
In photosystem-I, P700 refers to-
1. | chl-b |
2. | chl-a |
3. | number of pigment molecules |
4. | absorption peak of chl-a at 700nm. |
Light harvesting complexes are made up of-
1. proteins
2. pigments
3. protein and pigments
4. proteins and lipids.
In chloroplast the movement of electrons from PS-II to electron transport system is-
1. | uphill in terms of redox potential scale. |
2. | downhill in terms of redox potential scale. |
3. | from one cytochrome to another |
4. | None of the above. |
Electrons in the reaction center of PS-I are excited by-
a. blue light
b. red light
c. green light
d. blue and red light.
Final acceptor in the Z-scheme of light reaction-
1. oxygen
2. NADPH
3. NADP+
4. ferredoxin
In the Z-scheme of light reaction, at how many positions an electron is excited by the light?
1. 1
2. 2
3. 3
4. 4
Spliting of water is associated with-
1. | PS II |
2. | PS I |
3. | PS I AND PS II |
4. | outer membrane of thylakoid. |
Which of the following statement is incorrect?
1. | Electrons to PS-I are provided by PS-II |
2. | Electrons to PS-II are provided by the splitting of water |
3. | Electrons to PS-I are provided by the splitting of water |
4. | PS-II is physically located on the inner side of the membrane of the thylakoid. |
Where are the protons and oxygen produced by the splitting of water likely to be released?
1. | in the lumen of thylakoid |
2. | on the outer side of the membrane |
3. | Both a and b |
4. | used up in the light reaction |